* include/ruby/ruby.h: introduce flonum technique for

  64bit CPU environment (sizeof(double) == sizeof(VALUE)).
  flonum technique enables to avoid double object creation
  if the double value d is in range about between
  1.72723e-77 < |d| <= 1.15792e+77 or 0.0.
  flonum Float value is immediate and their lowest two bits
  are b10.
  If flonum is activated, then USE_FLONUM macro is 1.
  I'll write detailed in this technique on
  https://bugs.ruby-lang.org/projects/ruby-trunk/wiki/Flonum_tech
* benchmark/bmx_temp.rb: add an benchmark for simple
  Float calculation.
* gc.c (id2ref, rb_obj_id): add flonum Float support.
* include/ruby/intern.h: move decl of rb_float_new(double)
  to include/ruby/ruby.h.
* insns.def, vm.c, vm_insnhelper.c: add flonum optimization
  and simplify source code.
* vm_insnhelper.h (FLONUM_2_P): added.
* marshal.c: support flonum output.
* numeric.c (rb_float_new_in_heap): added.
* parse.y: support flonum.
* random.c: ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36798 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 2 deletions

diff --git a/random.c b/random.c
index a1fb3a800b..b36784c405 100644
--- a/random.c
+++ b/random.c
@@ -1122,8 +1122,7 @@ rand_range(struct MT* mt, VALUE range)
       case T_FLOAT: {
 	VALUE f = rb_check_to_float(beg);
 	if (!NIL_P(f)) {
-	    RFLOAT_VALUE(v) += RFLOAT_VALUE(f);
-	    return v;
+	    return DBL2NUM(RFLOAT_VALUE(v) + RFLOAT_VALUE(f));
 	}
       }
       default: